[R] Help with R script

[Vijayan Padmanabhan]

Dear R-help Group


Scenario 1:
I have a text file running to 1000 of lines...that
is like as follows:

[922] "FieldName: Wk3PackSubMonth"

 [923] "FieldValue: Apr"

 [924] "FieldName: Wk3PackSubYear"

 [925] "FieldValue: 2017"

 [926] "FieldName: Wk3Code1"

 [927] "FieldValue: "

 [928] "FieldValue: K4"

 [929] "FieldName: Wk3Code2"

 [930] "FieldValue: "

 [931] "FieldValue: Q49"


I want this to be programmatically corrected to
read as follows: (All consecutive lines starting
with FieldValue is cleaned to retain only one
line)

[922] "FieldName: Wk3PackSubMonth"

 [923] "FieldValue: Apr"

 [924] "FieldName: Wk3PackSubYear"

 [925] "FieldValue: 2017"

 [926] "FieldName: Wk3Code1"

 [927] "FieldValue: K4"

 [928] "FieldName: Wk3Code2"

 [929] "FieldValue: Q49"

Scenario 2:
In the same file, in some instances, the lines
could be as follows: in this case, wherever a line
is beginning with FieldName and the subsequent
line is not displaying a FieldValue, I would want
to programmatically identify such lines and insert
FieldValue (as blank).

[941] "FieldName: Wk3Code6"

 [942] "FieldValue: "

 [943] "FieldName: Wk3Code7"

 [944] "FieldValue: "

 [945] "FieldName: Wk3PackWSColorStiffRemarkCode1"

 [946] "FieldName: Wk3PackWSColorWrappRemarkCode1"

 [947] "FieldName:
Wk3PackWSDelamiStiffRemarkCode1"


ie in the above, it should be replaced as

[941] "FieldName: Wk3Code6"

 [942] "FieldValue: "

 [943] "FieldName: Wk3Code7"

 [944] "FieldValue: "

 [945] "FieldName: Wk3PackWSColorStiffRemarkCode1"
 [946] "FieldValue: "

 [947] "FieldName: Wk3PackWSColorWrappRemarkCode1"
 [948] "FieldValue: "

 [949] "FieldName:
Wk3PackWSDelamiStiffRemarkCode1"
 [950] "FieldValue: "


Can anybod suggest how to acheive this in R?

Thanks for your time.
Regards
VP



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